Add HTML5 functionality to .NET bindings

This includes being able to access appCache status, local and session
storage, and geolocation. Each feature has a role-based marker interface
(IHasApplicationCache, IHasWebStorage, or IHasLocationContext), and the
implementation has a boolean property to query if the driver supports that
feature. Attempting to use the feature for a driver which does not support
it will throw an exception.

Signed-off-by: Jim Evans <james.h.evans.jr@gmail.com>

dotnet/src/webdriver/HTML5/AppCacheStatus.cs

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+// <copyright file="AppCacheStatus.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+using System;
+using System.Collections.Generic;
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Represents the application cache status.
+    /// </summary>
+    public enum AppCacheStatus
+    {
+        /// <summary>
+        /// AppCache status is uncached
+        /// </summary>
+        Uncached = 0,
+
+        /// <summary>
+        /// AppCache status is idle
+        /// </summary>
+        Idle = 1,
+
+        /// <summary>
+        /// AppCache status is checkint
+        /// </summary>
+        Checking,
+
+        /// <summary>
+        /// AppCache status is downloading
+        /// </summary>
+        Downloading,
+
+        /// <summary>
+        /// AppCache status is updated-ready
+        /// </summary>
+        UpdateReady,
+
+        /// <summary>
+        /// AppCache status is obsolete
+        /// </summary>
+        Obsolete
+    }
+}

dotnet/src/webdriver/HTML5/IApplicationCache.cs

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+// <copyright file="IApplicationCache.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Defines an interface allowing the user to access application cache status
+    /// </summary>
+    public interface IApplicationCache
+    {
+        /// <summary>
+        /// Gets the current state of the application cache.
+        /// </summary>
+        AppCacheStatus Status { get; }
+    }
+}

dotnet/src/webdriver/HTML5/IHasApplicationCache.cs

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+// <copyright file="IHasApplicationCache.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Interface allowing the user to determine if the driver instance supports application cache.
+    /// </summary>
+    public interface IHasApplicationCache
+    {
+        /// <summary>
+        /// Gets a value indicating whether manipulating the application cache is supported for this driver.
+        /// </summary>
+        bool HasApplicationCache{ get; }
+
+        /// <summary>
+        /// Gets an <see cref="IApplicationCache"/> object for managing application cache.
+        /// </summary>
+        IApplicationCache ApplicationCache { get; }
+    }
+}

dotnet/src/webdriver/HTML5/IHasLocationContext.cs

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+// <copyright file="IHasLocationContext.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Interface allowing the user to determine if the driver instance supports geolocation.
+    /// </summary>
+    public interface IHasLocationContext
+    {
+        /// <summary>
+        /// Gets a value indicating whether manipulating geolocation is supported for this driver.
+        /// </summary>
+        bool HasLocationContext { get; }
+
+        /// <summary>
+        /// Gets an <see cref="ILocationContext"/> object for managing browser location.
+        /// </summary>
+        ILocationContext LocationContext { get; }
+    }
+}

dotnet/src/webdriver/HTML5/IHasWebStorage.cs

@@ -0,0 +1,36 @@
+// <copyright file="IHasWebStorage.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Interface allowing the user to determine if the driver instance supports web storage.
+    /// </summary>
+    public interface IHasWebStorage
+    {
+        /// <summary>
+        /// Gets a value indicating whether web storage is supported for this driver.
+        /// </summary>
+        bool HasWebStorage { get; }
+
+        /// <summary>
+        /// Gets an <see cref="IWebStorage"/> object for managing web storage.
+        /// </summary>
+        IWebStorage WebStorage { get; }
+    }
+}

dotnet/src/webdriver/HTML5/ILocalStorage.cs

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+// <copyright file="ILocalStorage.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Represents the local storage for the site currently opened in the browser.
+    /// Each site has its own separate storage area.
+    /// </summary>
+    public interface ILocalStorage
+    {
+        /// <summary>
+        /// Gets the number of items in local storage.
+        /// </summary>
+        int Count { get; }
+
+        /// <summary>
+        /// Returns value of the local storage given a key.
+        /// </summary>
+        /// <param name="key">key to for a local storage entry</param>
+        /// <returns>Value of the local storage entry as <see cref="string"/> given a key.</returns>
+        string GetItem(string key);
+
+        /// <summary>
+        /// Returns the set of keys associated with local storage.
+        /// </summary>
+        /// <returns>Returns the set of keys associated with local storage as <see cref="HashSet{T}"/>.</returns>
+        ReadOnlyCollection<string> KeySet();
+
+        /// <summary>
+        /// Adds key/value pair to local storage.
+        /// </summary>
+        /// <param name="key">storage key</param>
+        /// <param name="value">storage value</param>
+        void SetItem(string key, string value);
+
+        /// <summary>
+        /// Removes key/value pair from local storage.
+        /// </summary>
+        /// <param name="key">key to remove from storage</param>
+        /// <returns>Value from local storage as <see cref="string">string</see> for the given key.</returns>
+        string RemoveItem(string key);
+
+        /// <summary>
+        /// Clears local storage.
+        /// </summary>
+        void Clear();
+    }
+}

dotnet/src/webdriver/HTML5/ILocationContext.cs

@@ -0,0 +1,31 @@
+// <copyright file="ILocationContext.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Interface for location context
+    /// </summary>
+    public interface ILocationContext
+    {
+        /// <summary>
+        /// Gets or sets a value indicating the physical location of the browser.
+        /// </summary>
+        Location PhysicalLocation { get; set; }
+    }
+}

dotnet/src/webdriver/HTML5/ISessionStorage.cs

@@ -0,0 +1,67 @@
+// <copyright file="ISessionStorage.cs" company="WebDriver Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace OpenQA.Selenium.Html5
+{
+    /// <summary>
+    /// Represents the session storage for the site currently opened in the browser.
+    /// Each site has its own separate storage area.
+    /// </summary>
+    public interface ISessionStorage
+    {
+        /// <summary>
+        /// Gets the number of items in session storage.
+        /// </summary>
+        int Count { get; }
+
+        /// <summary>
+        /// Returns value of the session storage given a key.
+        /// </summary>
+        /// <param name="key">key to for a session storage entry</param>
+        /// <returns>Value of the session storage entry as <see cref="string"/> given a key.</returns>
+        string GetItem(string key);
+
+        /// <summary>
+        /// Returns the set of keys associated with session storage.
+        /// </summary>
+        /// <returns>Returns the set of keys associated with session storage as <see cref="HashSet{T}"/>.</returns>
+        ReadOnlyCollection<string> KeySet();
+
+        /// <summary>
+        /// Adds key/value pair to session storage.
+        /// </summary>
+        /// <param name="key">storage key</param>
+        /// <param name="value">storage value</param>
+        void SetItem(string key, string value);
+
+        /// <summary>
+        /// Removes key/value pair from session storage.
+        /// </summary>
+        /// <param name="key">key to remove from storage</param>
+        /// <returns>Value from session storage as <see cref="string">string</see> for the given key.</returns>
+        string RemoveItem(string key);
+
+        /// <summary>
+        /// Clears local storage.
+        /// </summary>
+        void Clear();
+    }
+}